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3.2.2 top vent (minimum clearance to combustible enclosures)
20"
508mm
53 1/8"
1349mm
33 1/8"
841mm
* See "venting requirements" section
Horizontal Vent Sections: A minimum clearance of 1" (25mm) at the bottom and sides, and 2" (51mm) at the
top of the vent pipe in all horizontal runs to combustibles is required except for clearances in appliance enclosure
which must be a minimum of 6" (152mm).
Vertical Vent Sections: A minimum of 1" (25mm) all around the vent pipe on all vertical runs to combustibles is
required.
The appliance requires a minimum enclosure / ceiling height of 53 1/8" (134.9cm) for top vent. For temperature
requirements, the enclosure space around and above the appliance must be left unobstructed.
** When terminating vertically on a top vented appliance, the height of the enclosure can be reduced to 39 1/8"
(99.3cm).
COMBUSTIBLE
1/2" 13mm
6" 152mm
1" 25mm
1" 25mm
NON-COMBUSTIBLE
BRICK
0" IF NON-COMBUSTIBLE
2" 51mm
FINISHING IS USED SUCH
AS BRICK AND STONE.
1" 25mm
43 1/8"
1095mm
MINIMUM
PLUS RISE *
framing
EN
23
W415-2355 / A / 12.09.20
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